描述：PC透明材料制成，适用于无线电射频电磁，声磁系统。

Description: made of PC transparent material; used in em, RF and AM system.

youdao

描述：PC透明材料制成，适用于无线电射频电磁，声磁系统。

Description: made of PC transparent material; used in em, RF and AM system.

youdao